Yeah, I’ve used mosquito dunks experimentally but we have a pond behind our house and in front of it, and a lake nearby. It’s Minnesota, after all. I did try to chuck some dunks into the ponds but they have a lot of cattails in the way so I was unsure if they even made it in the water.

Our attic was such a good habitat for bats we had to do something about it ;). But we’re also surrounded by woods.